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Fair Value Measurements (Based Upon Sensitivity and Nature of Inputs) (Details)
3 Months Ended
Mar. 31, 2014
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]  
Dividend yield 0.00%
Probability of down-round triggering event 5.00%
Timing of down-round triggering event December 2014
Minimum [Member]
 
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]  
Volatility 40.59%
Risk free interest rate 0.09%
Expected term, in years 9 months
Maximum [Member]
 
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]  
Volatility 50.29%
Risk free interest rate 1.05%
Expected term, in years 3 years 3 months 18 days